CN1245807A - Preparation method of silicane whose alpha-position related to silicon atom possesses tertiary alkyl radical - Google Patents

Preparation method of silicane whose alpha-position related to silicon atom possesses tertiary alkyl radical Download PDF

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CN1245807A
CN1245807A CN99111538A CN99111538A CN1245807A CN 1245807 A CN1245807 A CN 1245807A CN 99111538 A CN99111538 A CN 99111538A CN 99111538 A CN99111538 A CN 99111538A CN 1245807 A CN1245807 A CN 1245807A
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general formula
alkyl
chlorine
silane
preparation
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约恩·温特费尔德
博尔斯·卡尤斯·阿贝勒
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Wacker Chemie AG
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Wacker Chemie AG
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/12Organo silicon halides
    • C07F7/121Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20
    • C07F7/122Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20 by reactions involving the formation of Si-C linkages
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02Silicon compounds
    • C07F7/08Compounds having one or more C—Si linkages
    • C07F7/0803Compounds with Si-C or Si-Si linkages
    • C07F7/0825Preparations of compounds not comprising Si-Si or Si-cyano linkages
    • C07F7/0827Syntheses with formation of a Si-C bond

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention relates to a process for the preparation of silanes of the general formula 1 RmRn1SiX4-m-n(1) by reaction of Grignard reagents of the general formula 2 R1MgX1(2) with silanes of the general formula 3 RmSiX4-m(3) wherein R denotes C1- to C10-hydrocarbon radicals optionally substituted by fluorine, chlorine or cyano radicals, R1, in the alpha -position relative to the silicon atom, denotes tertiary C4- to C30-hydrocarbon radicals optionally substituted by fluorine, chlorine or cyano radicals, X and X1 each denote chlorine, bromine or iodine, m denotes the values 2 or 3 and n denotes the values 1 or 2.

Description

In the preparation method who has the silane of tertiary hydrocarbon base with respect to the alpha-position place of Siliciumatom
The present invention relates in the preparation method who has the silane of tertiary hydrocarbon base with respect to the alpha-position place of Siliciumatom.
In silane compound, yes by the silane of often studying and using for the silane that the Thexyl-and the tertiary butyl replace.The silane that Thexyl-replaces mainly is by Si-H compound and 2, and the hydrosilylation reactions between 3-dimethyl-2-butylene prepares.This is described among the EP-A-177 454.But,, have some to be difficult to remove in these by products because the migration of two keys can produce unwished-for by product in these reactions.
The reaction that A.Shirata (Tetrahedron Lett.30 (1989) 6393) has described by halosilanes and tertiary butyl chlorination magnesium prepares the silane that the tertiary butyl replaces, and wherein catalyzer is necessary.
US5,332,853 have described from the initial method for preparing t-butylsilane of tert-butyl lithium.Though this method has goodish productive rate because the price of alkyl lithium compounds is very high, so its almost without any economic worth.In addition, even in very rare solution, handling fire-hazardous tert-butyl lithium on technical scale also is extremely expensive and the very difficult safety that guarantees.
For increasing the productive rate that the reaction of more cheap metal alkyl tertiary butyl magnesium Ge Liya (Grignard) reagent and halosilanes generates corresponding t-butylsilane, the catalytic activity of having tested various metal-salts.According to EP-A-405 560, obtained gratifying result with the catalyzer that comprises prussiate or thiocyanate-, as silver cyanide, mercury cyanide (II), cupric cyanide (I), Sodium Thiocyanate 99 or cupric thiocyanide (I), but these reactions mostly relate to safety, environment and handling problem.In addition, the silane that makes by prussiate and thiocyanate-has not pleasant smell usually, and this has reduced the quality or the usability of corresponding silane.
When still acceptable halogen-transition-metal catalyst is made us in use, only there is at present the Grignard compound of in EP-A-542 250, describing to react, the productive rate that can realization makes us accepting with the reaction of hydrogenous chlorosilane and Grignard compound of in EP-A-656 363, describing and the chlorosilane that comprises at least three chlorine atoms.
The objective of the invention is to overcome the defective of prior art, and by simply, the economic method for preparing silane particularly, this method is that preparation has the silane of tertiary hydrocarbon base on the alpha-position with respect to Siliciumatom as initiator to comprise the halosilanes that is less than 3 halogen atoms.
The present invention relates to prepare the method for the silane of general formula 1:
R mR 1 nSiX 4-m-n(1) it is the Grignard reagent that makes general formula 2 when transition-metal catalyst and the non-proton chelate compound of inertia exist
R 1MgX 1(2) with the silane reaction of general formula 3,
R mSiX 4-m(3) wherein:
The optional C that is replaced by fluorine, chlorine or cyano group of R representative 1-C 10Alkyl,
R 1On alpha-position with respect to Siliciumatom, the optional C that is replaced by fluorine, chlorine or cyano group of its representative 4-C 30The tertiary hydrocarbon base,
X and X 1Represent chlorine, bromine or iodine respectively,
M represents 2 or 3 numerical value, and
N represents 1 or 2 numerical value.
The method according to this invention, can high yield and purity obtain the silane of general formula 1.Reaction times is short.When selecting catalyst and chelate compound, can easily consider toxicology character.
The example of alkyl R is an alkyl, as methyl, ethyl, n-propyl group, sec.-propyl, n-butyl, sec-butyl and octadecyl; Thiazolinyl is as vinyl; Cycloalkyl is as cyclohexyl and methylcyclohexyl; Aryl is as phenyl; Aralkyl is as benzyl, styroyl, phenyl nonyl and 2-phenyl propyl; And alkaryl, as tolyl.
The example of the alkyl R that is substituted is and the alkyl that replaces of halogen particularly, as 3,3,3-trifluoro propyl, 3,3,4,4,5,5,6,6,6-nine fluorine hexyls and neighbour-, right-and-chloro-phenyl-.
Preferred radicals R is C 1-C 6Alkyl and phenyl.
R 1Formula-CR preferably 2 3The tertiary hydrocarbon base, R wherein 2The connotation that has R independently of each other.Radicals R 2C preferably 1-C 6Alkyl, particularly methyl and ethyl and C 1-C 6The alkylidene group phenyl.
Radicals R 1Preferred example be the tertiary butyl, 1,1-dimethyl propyl or 1,1-diethyl propyl group and 1,1-dimethyl-2-phenylethyl.
The preferred example of the silane of general formula 1 is t butyldimethylsilyl chloride, tertiary butyl diethyl silicon chlorides, tertiary butyl di-n-butyl silicon chlorides, the positive decyl methyl of tertiary butyl silicon chlorides, the tertiary butyl (cyclohexyl-methyl) methyl silicon chlorides, tert-butyl diphenyl silicon chlorides, tertiary butyl aminomethyl phenyl silicon chlorides, 1,1-dimethyl benzyl dimethyl chlorination silicon and 1,1-dimethyl propyl dimethyl chlorination silicon.
The preferred example of the Grignard reagent of general formula 2 is tertiary butyl chlorination magnesium, tertiary butyl bromination magnesium, 1,1-dimethyl propyl magnesium chloride, 1,1-diethyl propyl group magnesium chloride and 1,1-dimethyl-2-propyl group ethylmagnesium chloride.
The preferred example of the silane of general formula 3 is dimethyl silicon dichloride, diethyl silicon dichloride, di-n-butyl silicon dichloride, positive decyl methyl dichloro silicon, (cyclohexyl methyl) methyl dichloro silicon, phenylbenzene silicon dichloride or ethylphenyl silicon dichloride.
The preferred transition-metal catalyst that uses is that oxidation level is+1 copper compound, as chlorinated ketone (I), cupric bromide (I), cupric iodide (I) or cupric oxide (I); Oxidation level is+2 copper compound, as cupric chloride (II), methyl alcohol copper (II), venus crystals (II) or cupric acetylacetonate (II); And zn cpds, as zinc chloride, zinc bromide, acetopyruvic acid zinc or zinc chloride-ether complex.
The addition activation can realize by the non-proton chelate compound of inertia, and this compound is preferably selected from glycol ether, many (organic amines) or many (organic phosphine alkane) and their assorted substitutive derivative.These compounds can add separately or add with the form of mixture.
The non-proton chelating glycol ether of used inertia is preferably open chain ethylene glycol bisthioglycolate C 1-C 12Alkyl oxide, particularly ethylene glycol bisthioglycolate C 1-C 6Alkyl oxide, as ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, Diethylene Glycol dibutyl ether, triethylene glycol dimethyl ether or TEG dimethyl ether, or ring-type glycol ether, particularly [12] hat-4 or [18] hat-6.
The non-proton chelating of inertia many (organic amines) is N preferably, N, N ', N '-four C 1-C 12Alkyl-C 1-C 3Alkylenediamine, as N, N, N ', N '-tetramethyl-methylene diamine, N, N, N ', N '-tetramethylethylened and N, N, N ', N '-tetraethyl-ethylene diamine, and N, N, N ', N ', N " five C 1-C 12Alkyl-C 1-C 3Two alkylene triamine, as N, N, N ', N ', N " five methyl diethylentriamine.
The non-proton chelating of inertia many (organic phosphine alkane) is P preferably, P, P ', P '-four C 1-C 12Alkyl-C 1-C 3Alkylidene group diphosphine alkane, as P, P, P ', P '-tetramethyl-ethylidene diphosphine alkane.
Particularly, glycol ether, many (organic amines) or many (organic phosphine alkane) comprise methyl, ethyl, propyl group or butyl group.
The assorted substitutive derivative of glycol ether, many (organic amines) and many (organic phosphine alkane) is also included within the scope of the present invention, as N, N-dimethyl-2-methoxy ethyl amine, N, N-dimethyl-2-ethoxyethyl group amine, N, N-dimethyl-3-METHOXY PROPYL AMINE, N, N-dimethyl-3-ethoxycarbonyl propyl amine, N, N-dimethyl-3-(2-methoxy ethoxy) propyl group amine [2.2.2]-kryptic acid.
The silane of Grignard reagent and general formula 3 is by 0.5: 1.0-1.0: 0.5, preferred 1.0: 0.8-1.0: 1.0 mol ratio is reacted.
In Grignard reagent, the addition of transition-metal catalyst is preferably 0.01-10mol%, is preferably 0.1-2mol% especially.
In Grignard reagent, the addition of chelate compound is the 1-20 equivalent, is preferably the 1-8 equivalent.Excessive greatly chelate compound can play the effect of thinner, to guarantee that reaction mixture is easy to stir when being settled out magnesium halide.Therefore, as the solvent of nonpolar alkane or aromatic compound not necessarily, but can not produce difficulty yet.
Reaction is preferably carried out under-30 to 160 ℃, preferred especially 0 to 120 ℃ temperature.
The silane of general formula 1 can randomly be distilled out as pure substance from reaction mixture by distillation, perhaps is distilled as corresponding solution after adding suitable solvent.
The silane of general formula 1 can be used in particular for organic compound is carried out silylanizing, for example comes synthetic drugs and analyzes usefulness.
In embodiment described below, except as otherwise noted, all part and percentage ratios all are meant weight part and weight percentage.Except as otherwise noted, under normal atmosphere and room temperature, carry out following examples, that is to say about 1000hPa and 20 ℃, perhaps temperature determined temperature when making reagent reach room temperature together when not extra heating or the cooling.Embodiment 1
At first under inert atmosphere the iodine of 48.6g (2.0mol) magnesium chips and a spatula point is introduced in 2 liters of three-necked flasks, this flask has accurate glassed agitator, seals graduated thermometer, Dimroth condenser and dropping funnel fully.Add 600ml ethylene glycol dimethyl ether and 203.7g (2.2mol) tertiary butyl chloride, make corresponding Grignard reagent thus--tertiary butyl chlorination magnesium.The cupric acetylacetonate (II) of Dropwise 5 .2g (0.02mol) at first is then at the dimethyl silicon dichloride that drips 232.3g (1.8mol) under 50 ℃ the temperature in 2 hours time.Temperature in the flask rises slightly, continues to stir the mixture 3 hours under 70 ℃ subsequently, so that reaction is carried out fully.For from solution, removing the magnesium salts that is settled out, in the atmosphere of inert gas argon, filter filter reaction mixture by pressurization and air extracting.The drip washing of filter cake spent glycol dimethyl ether.Last under normal pressure the filtrate of fractional distillation through merging, produce the t butyldimethylsilyl chloride (77% productive rate is in the dimethyl silicon dichloride) of 208.9g, it is white crystalline solid, purity be 95% (according to 1H-NMR).Embodiment 2
Repeat the step of embodiment 1, but do not use ethylene glycol dimethyl ether, and be to use other the non-proton chelating glycol ether of inertia.These researchs the results are shown in Table 1.
Table 1
Glycol ether Usage quantity (ml) T butyldimethylsilyl chloride productive rate (%) 1
Diethylene glycol dimethyl ether ????800 ????71
The Diethylene Glycol dibutyl ether ????800 ????67
The triethylene glycol dimethyl ether ????800 ????70
1: isolated yield, content more than or equal to 95% (according to 1H-NMR) embodiment 3
Repeat the step of embodiment 1, but do not use cupric acetylacetonate (II), and be to use other transition-metal catalyst.These researchs the results are shown in Table 2.
Table 2
Transition-metal catalyst Usage quantity (ml) T butyldimethylsilyl chloride productive rate (%) 1
Cupric chloride (I) ????1 ????64
Cupric chloride (I) ????5 ????65
Cupric bromide (I) ????1 ????70
Cupric iodide (I) ????1 ????62
Cupric oxide (I) ????1 ????27
Cupric acetylacetonate (II) ????5 ????77
Cupric chloride (II) ????1 ????69
Methyl alcohol ketone (II) ????1 ????68
Venus crystals (II) ????1 ????64
1: isolated yield, content more than or equal to 95% (according to 1H-NMR) embodiment 4
Repeat the step of embodiment 1, but in filtrate, add 280.0g toluene in distillation is subsequently handled, to obtain toluene solution rather than pure substance.Distill out the t butyldimethylsilyl chloride toluene solution of 440.0g, wherein the content of t butyldimethylsilyl chloride is 50 weight %.In the dimethyl silicon dichloride, this productive rate that is equivalent to t butyldimethylsilyl chloride is 81%.Embodiment 5
At first under inert atmosphere the iodine of 48.6g (2.0mol) magnesium chips and a spatula point is introduced in 2 liters of three-necked flasks, this flask has accurate glassed agitator, seals graduated thermometer, Dimroth condenser and dropping funnel fully.Add 600ml ethylene glycol dimethyl ether and 203.7g (2.2mol) tertiary butyl chloride, make tertiary butyl chlorination magnesium thus.The cupric acetylacetonate (II) of Dropwise 5 .2g (0.02mol) at first is then at the phenylbenzene silicon dichloride that drips 455.8g (1.8mol) under 50 ℃ the temperature in 2 hours time.Temperature in the flask rises slightly, continues to stir the mixture 3 hours under 70 ℃ subsequently, so that reaction is carried out fully.For from solution, removing the magnesium salts that is settled out, in the atmosphere of inert gas argon, filter filter reaction mixture by pressurization and air extracting.The drip washing of filter cake spent glycol dimethyl ether.Fractional distillation produces the tert-butyl diphenyl silicon chlorides (85% productive rate is in the phenylbenzene silicon dichloride) of 420.6g through the filtrate of merging under vacuum at last, and it is a colourless liquid, and the purity that records among the GC is 92%.

Claims (5)

1, the method for preparing the silane of general formula 1:
R mR 1 nSiX 4-m-n(1) it is the Grignard reagent that makes general formula 2 when transition-metal catalyst and the non-proton chelate compound of inertia exist
R 1MgX 1(2) with the silane reaction of general formula 3,
R mSiX 4-m(3) wherein:
The optional C that is replaced by fluorine, chlorine or cyano group of R representative 1-C 10Alkyl,
R 1On alpha-position with respect to Siliciumatom, the optional C that is replaced by fluorine, chlorine or cyano group of its representative 4-C 30The tertiary hydrocarbon base,
X and X 1Represent chlorine, bromine or iodine respectively,
M represents 2 or 3 numerical value, and
N represents 1 or 2 numerical value.
2, the method for claim 1, wherein R 1Be formula-CR 2 3The tertiary hydrocarbon base, R wherein 2Represent C 1-C 6-alkyl or C 1-C 6-alkylidene group phenyl.
3, as claim 1 and 2 described methods, wherein, radicals R is C 1-C 6-alkyl or phenyl.
4, as the described method of claim 1-3, wherein, using oxidation level be that+1 copper compound, oxidation level are that+2 copper compound or zn cpds are as transition-metal catalyst.
5, as the described method of claim 1-4, wherein, the non-proton chelate compound of described inertia is selected from: glycol ether, many (organic amines) or many (organic phosphine alkane) and their assorted substitutive derivative.
CN99111538A 1998-08-20 1999-08-20 Preparation method of silicane whose alpha-position related to silicon atom possesses tertiary alkyl radical Pending CN1245807A (en)

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DE19837906.4 1998-08-20

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Cited By (2)

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CN102964371A (en) * 2012-12-17 2013-03-13 上海化工研究院 Preparation method of silicon-bridged sterically-hindered cyclopentadiene compound
CN109879902A (en) * 2019-03-18 2019-06-14 山东东岳有机硅材料股份有限公司 The synthetic method of cyano-containing organo-silicon compound

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US6429327B1 (en) * 1999-01-21 2002-08-06 Fmc Corporation Organometallic catalysts
JP3869177B2 (en) * 2000-02-14 2007-01-17 セントラル硝子株式会社 Method for producing octafluoro [2,2] paracyclophane
JP6665437B2 (en) * 2015-01-22 2020-03-13 東ソー株式会社 Method for producing tertiary alkyl silane and tertiary alkyl alkoxy silane
CN113195506B (en) * 2018-12-10 2024-07-30 恩特格里斯公司 Preparation of triiodosilane

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102964371A (en) * 2012-12-17 2013-03-13 上海化工研究院 Preparation method of silicon-bridged sterically-hindered cyclopentadiene compound
CN102964371B (en) * 2012-12-17 2015-08-12 上海化工研究院 A kind of preparation method of silicon bridge vicinal resistance type cyclopentadiene compounds
CN109879902A (en) * 2019-03-18 2019-06-14 山东东岳有机硅材料股份有限公司 The synthetic method of cyano-containing organo-silicon compound
CN109879902B (en) * 2019-03-18 2021-07-09 山东东岳有机硅材料股份有限公司 Method for synthesizing organosilicon compound containing cyano

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US6156918A (en) 2000-12-05
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DE19837906C1 (en) 1999-12-16
JP2000086675A (en) 2000-03-28
ATE210668T1 (en) 2001-12-15
CA2279739A1 (en) 2000-02-20
EP0980870B1 (en) 2001-12-12

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